Headlight bulb and deflector



Jan. 24, 1928. 1,657,410

, B. PORTER HEADLIGHT BULB AND DEFLEGTOR 'il ed. Feb. 24,. 1926 Bey'anzinRf lNVENTQR WITNESS: ATTQRNEY Ell - lamp equipped "with ill . bhn

cut invention, and

BUELE AND DEEFLEGTUR.

duplication died February at, mac. serial 0. 99,388.

Thisinvention relates to. illuminating devices, particularly to headlamps for auto mobiles, and has tor its object the provision of novel combined bulb reflector to be in an ordinary automoieadlamp to replace the usual bulb, the

cause 1 tion and operation such that it will be concentrated upon the roadway the where it is most desirable while the same time there will be no ding glare in the eyes oi the drivers ot' approaching cars.

An important more specific object is the provision oi? a device ct this character which embodies simply a bulb of simple construction formed with an integral and pe culiarly constructed deflector device which acts not only to prevent the light from passing to undesired points or areas but which also concentrates the light at the places where it is most needed.

lln additional object is to provide a device of this character which will be simple and inexpensive manufacture, easy to apply and use, positive in action, eihcient and durable in service, and a general improvement in the art.

With the above and other objects and advantages in view, the invention consists in the details of construction and the arrangement and combination of parts to be here nafter more fully described and claimed, and illustrated in the accompanying drawings,- in which:

Figure 1 is a sectional view taken in a vertical plane through an automobile headthe invention. Figure 2 is a cross section taken on the line 22 of Figure 1,-and

Figure 3 is a cross section taken on the line 33 of Figure 1.

lteterringmore particularly to the drawings, the letter A designates the reflector of an ordinary automobile headlamp, at the center of which reflector is mounted the usual type of socket B ordinarily provided for holding the bulb. The headlamp casingand the'lcns at the front thereof are not illustratcdas they form no part of the presit is likewise clear that tre ordinary type of bulb is not shown for the same reason.

In carrying out the invention, a combined bulb and deflector com rising a bulb member which may be 0 entirel or substantially spherical form and provid usual manner.

of light.

I provide ed at one end with the usual base ll adapt ed to be engaged Within the socket B in the lhe bulb is of course pro-- vided-internally with a filament 12 which becomes incandescent as is well lrnown when current is passed through it.

Formed integrally with the bulb l9 and coaxially with the axis of the base 11 is a deflector comprising a conical shell member 13 which may be circular in cross section throughout or circular throughout a portion of its length, as indicated in Figure 2 and which may have its end portion oil polygonal or other formation as indicated in Figure 3. These details are immaterial and it is quite evident that many variations may be resorted to. The open end of the shell is covered by a lens or pane ll of glass, celluloid or other transparent or translucent material which may be colored, frosted or otherwise treated in order to avoid larelit is preferable that the inn-er surface of the shell be coated as a. mirror in order that light passing through the deflecting shell will be intensified. The exterior of the bulb 10 may be frosted or otherwise coated throughout or for only a portion of its extent but that area where the bulb leads into the deflector should of course be left entirely clear so that there will be no obstruction to the rays The bottom portion of the lens or pane 14 is represented as of such construction as to give an opening 15 through which the light may pass with maximum intensity and concentration, there being no glare at this pointin view of the -tact that it is below the line of vision ofthe driver of an approaching vehicle.

In the operation of the device, it will be apparent that all the light issuing laterally from the bulb will strike against the refiector'A and be deflected forwardly in the usual nmnner. It is also apparent that the light entering thedeflecting member to the point where it communicates or connects with the bulb Will pass forwardly in a straight-ahead direction owing to the peculiar shape of the concentrated lens or ane 14. Actual practice and experiment has demonstrated that this device will great- 1 intensify the light upon the roadway at tile area where its use is most desired while at the same time there will be no glare in the eyes of the driver of an approaching car, the device thus operatin as a great Safeguard to the motoring pub 'c 111 new of the fact that it lessens the danger of accident. It is believed that the construction, operation and advantages will be readily apparent to one skilled in the art without further explanation.

While I have shown and described the preferred embodiment of the invention, it should be understood that I reserve the right to make such changes in the form, construction and arrangement of parts as willnot depart from' the spirit of the invention or the scope of the subjoined claims.

Having thus described the invention, I

claim 1. A bulb and deflector comprising a bulb having a base adapted to be engaged within a socket, the bulb being provided interiorly with a filament adapted to be heated so as to become incandescent, and a deflector comprising an outwardly flaring substantially conical shell formed integrally upon the bulb diametrically opposite the base thereof and projecting considerably beyond the bulb, the open end of the deflector containing a lens.

2. A bulb and deflector comprising a bulb having a base adapted to be engaged within a socket, the bulb being provided interiorly with a filament adapted to be heated so as to become incandescent, and a deflector comprisin an outwardly flaring substantially conica shell formed integrally upon the bulb diametrically opposite the base thereof and projecting considerably beyond the bulb, the open end of the deflector containing a lens, and a lens located at the small end of the deflector.

3. A bulb and deflector comprising a bulb having a base adapted to be engaged within a socket, the bulb being provided interiorly with a filament adapted to be heated so as to become incandescent, and a deflector comprising an outwardly flaring substantially conical shell formed integrally upon the bulb diametrically opposite the base thereof and projecting considerably beyond the bulb, the open end of the deflector containing a lens, a portion of the shell being depressed inwardly.

In testimony whereof I aflix. my signature.

BENJAMIN PORTER. 

